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dc.contributor.advisorSarpkaya, T.
dc.contributor.authorElnitsky, John II.
dc.dateSeptember 1987
dc.date.accessioned2012-11-27T00:22:54Z
dc.date.available2012-11-27T00:22:54Z
dc.date.issued1987-09
dc.identifier.urihttp://hdl.handle.net/10945/22304
dc.descriptionApproved for public release; distribution is unlimiteden_US
dc.description.abstractThe trailing vortices generated by the control planes of submarines give rise to surface signatures in the form of scars and striations. Two counter-rotating vortices were generated in a novel experimental system and their interaction with the free surface was investigated. In addition, the governing equations have been solved through the use of the boundary-element method for a representative Froude number. The results have been expressed in terms of the depth of submergence of the vortices, their mutual induction velocity, and the initial vortex separation. It has been shown that the free surface begins to deform when the vortices are at a distance of about one initial vortex separation from the free surface. The height of the maximum deformation is attained at a normalized time of about 0.1, when the vortices are at a distance of about 0.5 bₒ from the free surface. The elevated part of the surface is bounded by two scars, whose motion is slaved to that of the vortices.en_US
dc.description.urihttp://archive.org/details/interactionofvor00elni
dc.format.extent112 p.en_US
dc.language.isoen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshMechanical engineeringen_US
dc.titleInteraction of a vortex pair with a free surface.en_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentMechanical Engineering
dc.subject.authorvortex convectionen_US
dc.subject.authorfree surface deformationen_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Mechanical Engineeringen_US
etd.thesisdegree.nameDegree of Mechanical Engineeren_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.levelProfessional Degreeen_US
etd.thesisdegree.disciplineMechanical Engineeringen_US
etd.thesisdegree.disciplineDegree of Mechanical Engineeren_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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